TY - JOUR
T1 - Measuring Spinal Cord Potentials and Cortico-spinal Interactions after Wrist Movements induced by Neuromuscular Stimulation
AU - Wimmer, Michael
AU - Kostoglou, Kyriaki
AU - Müller-Putz, Gernot
PY - 2022
Y1 - 2022
N2 - Electroencephalographic (EEG) correlates of movement have been studied extensively over many years. In the present work, we focus on investigating neural correlates that originate from the spine and study their connectivity to corresponding signals from the sensorimotor cortex using multivariate autoregressive (MVAR) models. To study cortico-spinal interactions, we simultaneously measured spinal cord potentials (SCPs) and somatosensory evoked potentials (SEPs) of wrist movements elicited by neuromuscular electrical stimulation. We identified directional connections between spine and cortex during both the extension and flexion of the wrist using only non-invasive recording techniques. Our connectivity estimation results are in alignment with various studies investigating correlates of movement, i.e., we found the contralateral side of the sensorimotor cortex to be the main sink of information as well as the spine to be the main source of it. Both types of movement could also be clearly identified in the time-domain signals.
AB - Electroencephalographic (EEG) correlates of movement have been studied extensively over many years. In the present work, we focus on investigating neural correlates that originate from the spine and study their connectivity to corresponding signals from the sensorimotor cortex using multivariate autoregressive (MVAR) models. To study cortico-spinal interactions, we simultaneously measured spinal cord potentials (SCPs) and somatosensory evoked potentials (SEPs) of wrist movements elicited by neuromuscular electrical stimulation. We identified directional connections between spine and cortex during both the extension and flexion of the wrist using only non-invasive recording techniques. Our connectivity estimation results are in alignment with various studies investigating correlates of movement, i.e., we found the contralateral side of the sensorimotor cortex to be the main sink of information as well as the spine to be the main source of it. Both types of movement could also be clearly identified in the time-domain signals.
KW - directed coherence
KW - electrical stimulation
KW - electroencephalogram
KW - generalized partial directed coherence
KW - movement
KW - sensorimotor areas
KW - somatosensory evoked potentials
KW - spinal cord potentials
UR - http://www.scopus.com/inward/record.url?scp=85127544073&partnerID=8YFLogxK
U2 - 10.3389/fnhum.2022.858873
DO - 10.3389/fnhum.2022.858873
M3 - Article
SN - 1662-5161
VL - 16
JO - Frontiers in Human Neuroscience
JF - Frontiers in Human Neuroscience
M1 - 858873
ER -